FLR XSA Diagnostics 2023-09-07 19:36:15.620484

CPUE data from indices

Catch data for 29 years 1994 to 2022. Ages 0 to 5.

                       fleet first age last age first year last year alpha beta
1    Sprat crimea cpue index         1        4       2014      2022  <NA> <NA>
2 Sprat caucasian cpue index         1        4       2014      2022  <NA> <NA>


 Time series weights :

    Tapered time weighting applied
   Power =   3 over  15 years

 Catchability analysis :

     Catchability independent of size for ages >   0 

     Catchability independent of age for ages >   2 

 Terminal population estimation :

     Survivor estimates shrunk towards the mean F
    of the final   4 years or the  5 oldest ages.

    S.E. of the mean to which the estimates are shrunk =   1.5 
 
    Minimum standard error for population
    estimates derived from each fleet =  0.3 

    prior weighting not applied

Regression weights
     year
age    2013 2014  2015 2016  2017  2018  2019  2020  2021 2022
  all 0.482 0.61 0.725 0.82 0.893 0.944 0.976 0.993 0.999    1


 Fishing mortalities
   year
age  2013  2014  2015  2016  2017  2018  2019  2020  2021  2022
  0 0.037 0.049 0.033 0.058 0.067 0.004 0.034 0.070 0.004 0.000
  1 0.169 0.238 0.193 0.388 0.119 0.075 0.113 0.084 0.188 0.051
  2 0.490 0.222 0.499 0.957 0.549 0.437 0.642 0.329 0.723 0.353
  3 0.100 0.133 1.412 0.666 0.453 1.879 0.536 0.781 1.290 0.972
  4 0.209 0.038 0.512 0.685 0.034 1.123 0.595 0.478 0.824 0.994
  5 0.209 0.038 0.512 0.685 0.034 1.123 0.595 0.478 0.824 0.994


 XSA population number (Thousand)
      age
year              0           1           2          3          4         5
  2013  83484873744 25181636840  5016017746 1726663727   47415472         0
  2014  66099091674 22364886161  8228037762 1188498369  604430457         0
  2015  88272616572 15679509590  8080874005 3762689233  656884482  85387004
  2016 101571996756 21276985461  5925575740 2802939347  578760619  27692920
  2017  87160003866 23875564971  6618185608 1299856231  908918402         0
  2018 122106284936 20301609156  9717598232 2183720116  521898711  52451242
  2019 106995157141 30277301129  8631325473 3586821393  210522149  90073141
  2020  75218271456 25754609744 12395451700 2595360180 1325004163 379388310
  2021  85172003352 17473369514 10852712810 5094791036  750482118 205048632
  2022  81263625383 21122462232  6636909416 3008301072  885472662 110236922


 Estimated population abundance at 1st Jan  2023 
      age
year   0           1          2          3         4         5
  2023 3 20232049448 9204042791 2663234946 718398794 219628150


 Fleet:  Sprat crimea cpue index 

 Log catchability residuals.

   year
age   2014   2015   2016  2017   2018   2019   2020   2021  2022
  1 -0.104  0.120  0.562 0.149 -0.537 -0.126  0.189 -0.263 0.087
  2  0.138 -0.070  0.345 0.078  0.047  0.222 -0.796 -0.033 0.177
  3  0.671  1.027 -0.033 0.753  1.645 -0.745  0.131  0.595 0.388
  4  0.105 -0.041  0.000 0.316 -0.148 -0.249  0.037 -0.023 0.012


 Mean log catchability and standard error of ages with catchability 
 independent of year class strength and constant w.r.t. time 

                1        2        3        4
Mean_Logq -19.794 -18.6483 -18.6483 -18.6483
S.E_Logq    0.312   0.3290   0.6775   0.1575


 Fleet:  Sprat caucasian cpue index 

 Log catchability residuals.

   year
age   2014   2015   2016   2017   2018   2019   2020   2021   2022
  1 -0.039  0.768  0.975 -0.017 -0.512 -0.110 -0.221 -0.409 -0.099
  2  0.069  0.023 -0.305  0.519  0.007  0.087 -0.398 -0.166  0.198
  3  0.544 -0.868 -1.366  0.087  1.570 -0.754  0.359  0.636  0.469
  4 -0.035 -0.867 -1.284 -2.524 -1.257  1.293 -0.604  0.487  0.189


 Mean log catchability and standard error of ages with catchability 
 independent of year class strength and constant w.r.t. time 

                 1        2        3        4
Mean_Logq -19.8239 -18.5808 -18.5808 -18.5808
S.E_Logq    0.5036   0.2741   0.9124   1.1352


 Terminal year survivor and F summaries: 
 
 ,Age 0 Year class =2022 

source 
     scaledWts   survivors yrcls
fshk     0.016   279173349  2022
nshk     0.984 21732520350  2022

 ,Age 1 Year class =2021 

source 
                           scaledWts   survivors yrcls
Sprat crimea cpue index        0.683 10040891205  2021
Sprat caucasian cpue index     0.281  8340379748  2021
fshk                           0.036  3795688210  2021

 ,Age 2 Year class =2020 

source 
                           scaledWts  survivors yrcls
Sprat crimea cpue index        0.388 3179594834  2020
Sprat caucasian cpue index     0.579 3245637269  2020
fshk                           0.033 1544425411  2020

 ,Age 3 Year class =2019 

source 
                           scaledWts  survivors yrcls
Sprat crimea cpue index        0.350 1059205098  2019
Sprat caucasian cpue index     0.306 1148491495  2019
fshk                           0.343  542627055  2019

 ,Age 4 Year class =2018 

source 
                           scaledWts survivors yrcls
Sprat crimea cpue index        0.864 222219570  2018
Sprat caucasian cpue index     0.042 265416162  2018
fshk                           0.093 894212634  2018
NULL
